Coordinate input instrument



FIG. 1 is a top-front-right perspective view of a first representative embodiment of a coordinate input instrument according to my new design;

FIG. 2 is a right side elevational view thereof, wherein the left side elevational view is a mirror image of the right side elevational view;

FIG. 3 is a top plan view thereof;

FIG. 4 is a rear elevational view thereof; and,

FIG. 5 is a partial top-front-right perspective view thereof, as indicated in by the view indicator shown in FIG. 1.

The dashed broken lines in the drawings show portions of the coordinate input instrument that form no part of the claimed design. The dot-dot-dash broken lines in the drawings indicate from where the enlarged views are taken and form no part of the claimed design. 

CLAIM The ornamental design for a coordinate input instrument, as shown and described. 